A dig, first spotted in 2006, was excavated in 30 minutes and entry gained to 20m of 1 - 2m high passage ending in a total choke of earth. "It would probably be a fairly large passage without the fill."
Reference: anon., 2011d (summer logbook)
Entrance pictures: yes
Underground pictures : yes
Video :
Detailed Survey : sketch
Line Survey :
On area survey :